"The fire’s rapid expansion to 160 acres within 24 hours and the deployment of up to 120 personnel underscore its potential impact on the surrounding community and natural resources."
The Prairie Mountain wildfire, located in Skagit County, Washington, was first discovered on August 7, 2026, and is currently active under the jurisdiction of the Washington Department of Natural Resources. The fire began at 123 acres and grew to a peak of 160 acres on August 9 before shrinking to 135 acres by August 12; it has since stabilized around 142 acres. Containment progressed steadily from 0% on August 8 to 90% by August 14, with personnel ranging from 32 to 120 across the timeline. Fire behavior has remained moderate, with periods of backing, flanking, and short‑range spotting, and the incident has incurred estimated costs rising from $1,000,000 to $3,100,000.
Official source description: 7 Miles NE from Darrington, WA
Minimal; Backing; Creeping; Smoldering
Good air quality. Outdoor activity is generally safe near this incident.
Nearest reporting station: Darrington. Source: AirNow.gov (EPA).
With the fire currently 90% contained and behavior moderate, general wildfire safety precautions remain advised, including staying informed of local updates and avoiding the immediate vicinity of the fire perimeter.
IRWIN ID: {318A20CA-3335-4F7B-A6FF-FEE177BCAAFA}
Discovered: Aug 7, 2026
Cause: Human
Managing Agency: DNR
Est. Cost to Date: $350,000
Coordinates: 48.3069, -121.4439
Other wildfires that have recently been contained or dropped from official tracking in WA.
The PRAIRIE MOUNTAIN Fire has burned 141 acres as of August 24, 2026.
Yes, the PRAIRIE MOUNTAIN Fire is fully contained (100%).
The official cause has been listed as: Human.
The PRAIRIE MOUNTAIN Fire is burning in Skagit, WA.
No, the PRAIRIE MOUNTAIN Fire is no longer listed as active by NIFC.
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